401291376281 has 2 divisors, whose sum is σ = 401291376282. Its totient is φ = 401291376280.

The previous prime is 401291376259. The next prime is 401291376323. The reversal of 401291376281 is 182673192104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 383458177600 + 17833198681 = 619240^2 + 133541^2 .

It is a cyclic number.

It is not a de Polignac number, because 401291376281 - 2¹⁰ = 401291375257 is a prime.

It is a super-2 number, since 2×401291376281² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (401291376481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200645688140 + 200645688141.

It is an arithmetic number, because the mean of its divisors is an integer number (200645688141).

Almost surely, 2^401291376281 is an apocalyptic number.

It is an amenable number.

401291376281 is a deficient number, since it is larger than the sum of its proper divisors (1).

401291376281 is an equidigital number, since it uses as much as digits as its factorization.

401291376281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 401291376281 in words is "four hundred one billion, two hundred ninety-one million, three hundred seventy-six thousand, two hundred eighty-one".